磁带背面用英语怎么说？

磁带背面

tape backing

tape

n. 带子，胶带，磁带，卷尺；vt. 用带子捆起来，录音；vt.& vi. 录音；

例句
He is shown in the tape of the beating as administering most of the blows.
录像显示在斗殴中他打得最凶。

backing

n. 支持，支持者，背衬，<口>（独唱或独奏的）伴奏；v. （使）后退，（使）倒退( back的现在分词)，支持，作…的衬里，（用证据或理论来）证实（一种理论或主张）；

例句
He said the president had the full backing of his government to negotiate a deal...
他说政府将全力支持总统通过谈判达成协议。